Vulnerability in Linux

CVE-2023-53990

In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.

EPSS: 0.002 (7.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions 5.15.63, 6.3.2, 6.4

References

Frequently asked questions

What is CVE-2023-53990?
CVE-2023-53990 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-24.
How severe is CVE-2023-53990?
High severity. CVSS v3 base score is 7.8 out of 10.